If you are a landless peasant you know if you are being too heavily taxes - you can see how much the land produces. People have no idea whether they are overpaying for food at the end of a long supply chain, let alone for technology.

Another factor is when you are paying for many things, its only worth worrying about the most expensive as the others are relatively trivial. Compared to housing and utilities the rest is hardly worth thinking about.

That said, the subscriptions do keep growing. But, in fairness, most cloud services have ongoing cost to the business, so ongoing consumer costs make sense.